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There are there opinion about Newton’s Law: Newton’s 1 Law Newton’s 1 Law Newton’s 2 Law Newton’s 2 Law Newton’s 3 Law Newton’s 3 Law

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Newton’s 1 Law Newton’s Law explains: “Every body will be at rest or moves in uniform rectilinear if there is no forces change that condition.” The formula of Newton’s 1 law as follow: € F= 0 Which means force resultant on the body is equal to zero

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Newton’s 2 Law The body that influence force will have acceleration which its magnitude is directly proportional to the magnitude of the sum of forces and inversely proportional to its mass. The formula of Newton’s 2 Law: a = F/m or F = m.a In which: F= the force acting on the body / gaya yang bekerja pada benda (N) m= mass of the body (kg) m= mass of the body (kg) a=acceleration of the body/percepatan benda (m/s 2 ) a=acceleration of the body/percepatan benda (m/s 2 )

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Newton’s 3 Law If a body makes force (making action) to another body, appears reaction force from the body to the former body with equal magnitudes, while the direction are in opposite. The formula of Newton’s 3 Law: F ACTION = - F REACTION In which: F 1 = Action force/gaya aksi F 2 = reaction force/gaya reaksi F 2 = reaction force/gaya reaksi The sign (-) shows those two forces are in opposite direction

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Pascal’s Law Pascal expressed that: Pressure given to liquid in closed chamber will be continued by the liquid to every direction with uniform and the same magnitude. The formula of Pascal’s law as follow: P =F A In which: P= Pascal’s Law (N/m 2) F= Force (N) A= Section area (m 2 )

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In mercury manometer pressure in a chamber is formulated as follow: P= 76 cmHg + t In which:t= difference of mercury height in both manometer legs. The addition sign (+) is used if chamber pressure is larger than atmospheric pressure. On the contrary the minus sign (-) is used if chamber pressure is smaller than atmospheric pressure.

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The ability of a lens in collecting or spreading it receives is called the power of lens. The power of lens is formulated as follow: P = 1/ f

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Optical instrument Image magnification in the magnifying glass is stated as follow: 1. For the eyes doesn’t accommodate 2. For the eyes that accommodates at the distance x 3. For the eyes that accommodate maximum